io.github.gordonkjlee/factmem
FactMem
A local memory engine. You own the SQLite file. Not Mem0's hosted OpenMemory MCP.
alive probed 2026-10-15
10tools
4.7ktokens in Claude Opus 5.5
4.8ktokens in Claude Code
2.4 %of a 200k context window
3.0ko200k_base estimate
367 msto initialize
15 msto list tools
- Run it
- npx -y @factmem/mcp@0.26.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- factmem 0.26.0
- Capabilities
- resources, tools
- Instructions
- 256 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/gordonkjlee/factmem
- Registry
- active, updated 2026-09-02 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| get_entity | 495 | 17 % |
| log_event | 463 | 16 % |
| search_knowledge | 456 | 15 % |
| get_stats | 376 | 13 % |
| capture_fact | 354 | 12 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.gordonkjlee/factmem)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.